AO |
1 |
3 |
AB |
AC |
AD |
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既非充分也非必要条件 |
OB |
OC |
OD |
0 |
OA |
AB |
OA |
AC |
OA |
AD |
0 |
OA |
AB |
AC |
AD |
0 |
AO |
1 |
3 |
AB |
AC |
AD |
π |
6 |
1 |
2 |
1-x2 |
|x|-2 |
A.充分而不必要条件 | B.必要而不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
A.-1≤x≤1 | B.x≥1或x≤-1 | C.x>1或x<-1 | D.0≤x≤1 |
© 2017-2019 超级试练试题库,All Rights Reserved.